Ingot-skid for ingot-heating furnaces



C. W. HAWTHORNE.

INGOT SKiD FOR INGOT HEATING FURNACES.

APPLICATION FILED JUNE 19, I919.

1,3 1,254, Patented Dec. 7, 1920.

A 7 TOR/V5 K5,

' nace and on UNITED STATES PATENT OFFICE.

CHARLES W. I-IA'WTHORNE, OF BUFFALO, NEW YORK, ASSIGNOR ONE-HALF TO WICKWIRE SPENCER STEEL CORPORATION, OF HARRIET, NEW YORK, A COR- PORATION OF MASSACHUSETTS.

INGOT-SKID FOR INGOT-HEATING FURNACES.

Specification of Letters Patent.

Patented Dec. *7, 1920.

Application filed June 19, 1919. Serial No. 305,281.

To all whom it may concern Be it known that 1, Cinemas WV. HAW- 'lI-IORNE, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Ingot-Skids for Ingot-Heating Furnaces, of which the following is a specification. V

This invention relates to improvements in ingot skids or supports for ingot-heating furnaces.

In heating steel ingots preparatory to rolling them into bars or other shapes, the ingots are heated in a heating furnace, the ingots resting on horizontal skid rails, pipes or supports which extend through the furwhichthe ingots slide as they are shoved through the furnace a step at a time as each new ingot is introduced. These skids or supports are water-cooled to protest them from injury from the heat of the furnace, and on account of their lower temperature, they chill the ingots in spots in the vicinity of the points of contact of the ingots with the skids or pipes. These cool spots seriously interfere with the proper rolling of the ingots, since different por- .tions of the ingots are of different temperature and the article rolled from the 1ngots will not be of uniform character throughout. The primary object of this invention is to product an ingot support or skid for ingot heating furnaces which will practically prevent such cool or unheatedspots in the in ots.

ther objects of the invention are to provideingot supporting members or sleeves which can be readily applied to the watercooled skid pipes of the furnaces and will provide spaced, restricted supporting points or portions'for the ingots which will perm t of access of the heating flame to practically all portions of the ingots; also to form the ingot supporting sleeves or members so that each one has a plurality of restricted supporting points for the ingot i and is adapted to be turned to different positions on the skid pipes for presenting new supporting portions for the ingots; and also to improve the construction of the ingot skids or supports of ingot heating furnaces'in the other respects hereinafter described and set forth in the claims.

heating portion of the furnace.

or sleeves or members.

ports 12 for the skid stricted supporting portions 11 form a se- In the accompanying drawings:

Figure l is a fragmentary longitudinal section of an ingot heating furnace provided with. ingot skids or supports embodying the invention.

Fig. 2 is a transverse section thereof.

Fig. 8 is a perspective view of one of the skid sleeves or members.

Fig. 4 is a cross-section of one of the sleeves or members.

Fig. 5 is a fragmentary longitudinal section ofthe skid.

A represents the furnace which may be of the usual or any suitable construction, and B represents two parallel spaced skid pipes which extend through the furnace from .front to rear thereof and are provided with the usual downwardly inclined rear portions C on which the ingots are adapted to slideout of the furnace. These pipes, as usual, are connected with suitable means'so that water is caused to flow through the pipes to protect them from burning or injury by the heat of the furnace.

The ingot skids or supports are preferably constructed as follows:

On each of the skid pipes B is threaded or arranged a series of hollow ingot supporting members or sleeves D which preferably are arranged in contact, end to end, and extend throughout the horizontal portion of the skid from end to end of the As shown, the sleeves or members D are retained in place on the skid pipe between the front end of the inclined rear portion of the pipe and a collar or stop 10 of any suitable sort on the pipe at the front end of the series Preferably, each of the supporting sleeves or members tapers or decreases in diameter from its middle portion to its opposite ends and is'of polygonal external shape in cross-section and provided at its large middle portion with a circumferential series of supporting faces or portions 11 of relatively small area. Vi hen the supporting sleeves or members are threaded on the skid pipes B- they rest at their lower sides upon the walls or suppipes, and the reries of spaced, restricted, raised supports or projections on which the ingots are" complete and uniform adapted to rest and slide as they are shoved through the furnace. The restricted supporting portions of each sleeve or ,member are disposed at intervals around the sleeve or member and separated by intervening flat or depressed parts 11 and the tapering ends of the sleeves form depressions between the supporting portions of adjacent sleeves D oneach skid pipe, so that when the ingots rest on the restricted supports, spaces 13 for the passage of flame or heat are left beneath the ingots between the sup porting portions 11 of adjacent sleeves and around each supporting portion on each sleeve. The flame or heat therefore has ready access to the under surfaces of the ingots all around each of tions or faces 11. The flame, therefore, has direct contact with the ingots except at the very small portions thereof immediately in contact with the restricted supports and the ingots can be heated so nearly uniformly throughout as to practically eliminate the cool spots caused by the greater contact of the ingots with the skid pipes or supports heretofore used.

The supporting sleeves or members D are preferably made of such length that the distance from center to center of the supporting portions 11 of adjacent sleeves is less than or differs from the distance from center to. center of adjacent ingots. By this arrangement each time the ingots are advanced a step in the furnace by the introduction of a new ingot, new portions of the ingots will rest on the restricted supporting portions of the sleeves, and in this way a portion of an ingot which is in contact with the restricted supports in one portion of the furnace will be out of contact with such supports and ac cessible to the flame heat in other portions of the furnace, thus, resulting in a more heating of the ingots throughout.

The restricted supports 11 of the sleeves or members D wear down more or less in use by contactrwith the ingots sliding over the same, and if the supports become thus worn down to an objectionable degree the supporting sleeves or members can be readily turned a part revolution on the skid pipe to present a new set of'supportingv faces or portions uppermost for the ingots to rest upon. Since each of the supporting sleeves or members has several of the restricted supporting portions extending around its circumference, the sleeve or member can be turned to as many dlfferent positions as it has supporting faces or portions and there fore the supporting sleeves or members are adapted for use for a long period of time before they have to be renewed. Since the sleeves are of polygonal shape they have flat faces lowermost to rest on in each of their different positions, and by providing the supporting por- .bers arranged end to the wall 12 with seat blocks or bricks conforming to the undersides of the sleeves D, as shown in Fig. 5, the 'wall is not apt to be split or broken by the pressure of the sleeves due to the weight of the ingots.

I claim as my invention:

1. An ingot skid for ingot-heating furnaces comprising an elongated support eX tending lengthwise in the furnace and along which the ingots slide through the furnace lengthwise of the support, said skid having a series of alternate restricted raised portions and depressed portions, said depressed portions being of a length less than the width of the ingot and forming spaces beneath ingots resting on said raised portions.

2. naces comprising an elongated support eX- tending lengthwise in the furnace and along which the ingots slide through the furnace lengthwise of the support, said skid having a series of alternate restricted raised pore tions and depressed portions, said raised portions being'spaced apart a distance different from and not greater than the distance be tween centers of adjacent ingots, and said An ingot skid for ingot-heating furdepressed portions forming spaces beneath on each of a plurality of sides thereof a1 ternate restricted raised portions and depressed portions, said depressed portions bethe ingots slide through the furnace ing of a length less than the width of the- 4 ingot and forming spaces beneath ingots resting on said raised portions, and said skid being rotatable to place different sides thereof uppermost.

4. An ingot skid for ingot heating furnaces comprising a series of separate memend and forming an elongated support along which the ingots slide, said members having portions of dif ferent diameters forming alternate raised and depressed portions on the skid. V V

5. An ingot skid. or support for ingotheating furnaces, comprising a pipe,'and.

supporting sleeves surrounding said pipe and forming a series of alternate raised and depressed portions, said depressed portions forming spaces beneath ingots resting on said raised portions.

6. An ingot skid or support for'ingotheating furnaces, comprisin a pipe, and

supporting sleeves arrangi.-. Jnd to end on said pipe, said sleeves having portions of different diameter forming a series of alternate' raised and depressed portions, said depressed gots resting on said raised portions.

Aningotskid or support for ingotheating furnaces, comprising a pipe, and

portions forming spaces beneath in-- supporting sleeves surrounding said pipe, said sleeves being of polygonal cross-section and having portions of different diameters forming a series of alternate raised and depressed portions, said depressed portions forming spaces beneath ingots resting on said raised portions.

8. An ingot skid or support for ingotheating furnaces, comprising a pipe, and supporting sleeves surrounding said pipe, said sleeves being of polygonal cross-section and having portions of different diameters forming a series of alternate raised and depressed portions, said depressed portions forming spaces beneath ingots resting on said raised portions, and said sleeves being rotatable on said pipe to place different sides of the sleeves uppermost.

9. An ingot skid or support for ingotheating furnaces, comprising a pipe, and supporting sleeves arranged end to end on said pipe, each of said sleeves being of largest diameter at its middle portion and tapering from said middle portion toward its opposite ends.

WVitness my hand this 12th day of June,

CHARLES WV. HAWTHORNE.

WVitnesses WVILLIAM D. S'roWE, BERTHA KERR. 

